A novel CAPTCHA scheme based on facial expression reconstruction.
Mohammad MoradiMohammad Reza KeyvanpourPublished in: Int. J. Electron. Bus. (2020)
Keyphrases
- facial expressions
- facial expression recognition
- face images
- expression recognition
- face recognition
- human faces
- facial expression analysis
- video sequences
- facial images
- automatic facial expression recognition
- cohn kanade
- facial features
- recognition of facial expressions
- expression classification
- emotion recognition
- person independent
- three dimensional
- head motion
- facial motion
- facial actions
- facial action units
- human emotion
- facial gestures
- shape recovery
- principal component analysis
- feature vectors
- computer vision
- recognizing facial expressions
- facial expression synthesis